If your destination is east of Village Center Drive (shown in blue), use Yorba Linda Boulevard/Weir Canyon Road from the Riverside Freeway to get to and from your destination. If your destination is west of Village Center, use Imperial Highway to the greatest extent possible to get to and from your destination.
Less common causes. There are also a number of other, less common causes of mouth ulcers. Some of these are listed below: 1  Herpes simplex infection: a highly contagious virus, also known as the 'cold sore virus', which can cause cold sores on the mouth and the genitals.
Bacteria: there are numerous kinds of bacteria present in the mouth and these can cause mouth ulcers. One such example is âhelicobacter pyloriâ. Diet: foods which are highly acidic are known triggers for mouth ulcers and include eggs, coffee, cheese, strawberries and pineapple.